"He's down," said Callahan, who met with Tuiasosopo on Tuesday
and again Wednesday. "The guy's out for the year. It was going to
be tough to get him back. It's going to be at least six weeks."

The Raiders filled his roster spot with practice squad
quarterback Tee Martin. Oakland also signed quarterback Rob Johnson
on Tuesday, and Johnson will likely be the No. 3 quarterback for
Sunday's game against the New York Jets behind starter Rick Mirer
and Martin.

Also Wednesday, the Raiders said they signed offensive lineman
Matt Knutson and running back Keith Burnell to the practice squad
and waived defensive back Carey Scott.

Tuiasosopo, a third-year pro, made his first NFL start in place
of injured 2002 MVP Rich Gannon in last Sunday's 23-13 loss at
Detroit, but didn't last long. On Oakland's third offensive series,
he bobbled a snap, then ran up the middle and fumbled on a hard hit
by Boss Bailey. Tuiasosopo stayed in the game for two more
possessions before being sidelined.

Gannon hasn't thrown a pass since going down in the Raiders'
17-10 loss to Kansas City on Oct. 20. He is expected to begin
throwing again in about a week.